Governing Law and Regulations
Washington Department of Ecology (WDOE) Hazardous Waste and Toxics Reduction Program
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Washington has adopted the U.S. Environmental Protection Agency's (EPA) Hazardous Waste Generator Improvements Rule, effective in the state as of April 30, 2019, which includes standards that allow generators to treat hazardous waste on-site. The state's dangerous waste (DW) treatment rules include the federal requirements and the state's more stringent rules, which apply to facility permit application process, treatment facility design, construction and operation, and on-site treatment by large quantity generators (LQGs), medium ...